New release: v1.31
update dwarves package to release v1.31
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Gregory Bell
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132c3fabc7
commit
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.gitignore
vendored
1
.gitignore
vendored
@ -15,3 +15,4 @@
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/dwarves-1.25.tar.xz
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/dwarves-1.27.tar.xz
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/dwarves-1.30.tar.xz
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/dwarves-1.31.tar.xz
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@ -1,94 +0,0 @@
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From b1412a88bb616f449401be285d43b028962992b9 Mon Sep 17 00:00:00 2001
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From: Arnaldo Carvalho de Melo <acme@redhat.com>
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Date: Mon, 1 Jul 2019 11:37:40 -0300
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Subject: [PATCH 1/1] fprintf: Fixup handling classes with no members
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Will Cohen reported this NULL pointer dereference while processing some
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object linking with cuda:
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#0 0x00007ffff7f91453 in __class__fprintf (class=0x522560, cu=0x40ff80, conf=0x7fffffffa930, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1624
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#1 0x00007ffff7f92195 in tag__fprintf (tag=0x522560, cu=0x40ff80, conf=0x7fffffffa930, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1835
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#2 0x00007ffff7f90b57 in __class__fprintf (class=0x5224c0, cu=0x40ff80, conf=0x7fffffffaaa0, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1406
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#3 0x00007ffff7f92195 in tag__fprintf (tag=0x5224c0, cu=0x40ff80, conf=0x40a200 <conf>, fp=0x7ffff7ece780 <_IO_2_1_stdout_>)
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at /home/acme/git/pahole/dwarves_fprintf.c:1835
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#4 0x0000000000402d03 in class_formatter (class=0x5224c0, cu=0x40ff80, id=1257) at /home/acme/git/pahole/pahole.c:224
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#5 0x0000000000403074 in print_classes (cu=0x40ff80) at /home/acme/git/pahole/pahole.c:319
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#6 0x0000000000404bb2 in pahole_stealer (cu=0x40ff80, conf_load=0x40a240 <conf_load>) at /home/acme/git/pahole/pahole.c:1174
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#7 0x00007ffff7f9ff73 in finalize_cu (cus=0x40b2b0, cu=0x40ff80, dcu=0x7fffffffacf0, conf=0x40a240 <conf_load>)
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at /home/acme/git/pahole/dwarf_loader.c:2227
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#8 0x00007ffff7f9ffac in finalize_cu_immediately (cus=0x40b2b0, cu=0x40ff80, dcu=0x7fffffffacf0, conf=0x40a240 <conf_load>)
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at /home/acme/git/pahole/dwarf_loader.c:2236
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#9 0x00007ffff7fa064c in cus__load_module (cus=0x40b2b0, conf=0x40a240 <conf_load>, mod=0x40d760, dw=0x40e980, elf=0x40b360,
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filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda") at /home/acme/git/pahole/dwarf_loader.c:2389
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#10 0x00007ffff7fa0760 in cus__process_dwflmod (dwflmod=0x40d760, userdata=0x40d770, name=0x40d910 "examples/wcohen/02_Exercise.cuda",
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base=4194304, arg=0x7fffffffcf10) at /home/acme/git/pahole/dwarf_loader.c:2434
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#11 0x00007ffff7f32be1 in dwfl_getmodules () from /lib64/libdw.so.1
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#12 0x00007ffff7fa0820 in cus__process_file (cus=0x40b2b0, conf=0x40a240 <conf_load>, fd=3,
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filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda") at /home/acme/git/pahole/dwarf_loader.c:2487
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#13 0x00007ffff7fa089c in dwarf__load_file (cus=0x40b2b0, conf=0x40a240 <conf_load>, filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda")
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at /home/acme/git/pahole/dwarf_loader.c:2504
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#14 0x00007ffff7f8b0dd in cus__load_file (cus=0x40b2b0, conf=0x40a240 <conf_load>, filename=0x7fffffffd5e3 "examples/wcohen/02_Exercise.cuda")
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at /home/acme/git/pahole/dwarves.c:1745
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#15 0x00007ffff7f8bc2a in cus__load_files (cus=0x40b2b0, conf=0x40a240 <conf_load>, filenames=0x7fffffffd150)
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at /home/acme/git/pahole/dwarves.c:2109
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#16 0x0000000000404ff0 in main (argc=2, argv=0x7fffffffd148) at /home/acme/git/pahole/pahole.c:1294
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(gdb)
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(gdb) p class__name(class, cu)
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$6 = 0x5cbb85 "__nv_hdl_helper_trait<__nv_dl_tag<int (*)(int, char**), main, 1u>, void (main(int, char**)::__lambda0::*)(int, double&)const>"
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(gdb) p class->type.nr_members
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$7 = 0
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(gdb) p last
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$8 = (struct class_member *) 0x0
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(gdb)
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So, before checking for bitfield details, first check if there were
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members.
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Now, if we show all structs/classes in that object file and look for the
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above data structure, we find it inside another:
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$ pahole examples/wcohen/02_Exercise.cuda
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<SNIP>
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struct __nv_hdl_helper_trait_outer<false, false, int, Kokkos::View<double**>, Kokkos::View<double*>, Kokkos::View<double*> > {
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struct __nv_hdl_helper_trait<__nv_dl_tag<int (*)(int, char**), main, 1u>, void (main(int, char**)::__lambda0::*)(int, double&)const> {
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class __nv_hdl_wrapper_t<false, false, __nv_dl_tag<int (*)(int, char**), main, 1u>, void(int, double&), int, Kokkos::View<doubl get<main(int, char**)::__lambda0>(class __lambda0, int, class View<double**>, class View<double*>, class View<double*>);
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/* size: 1, cachelines: 0, members: 0 */
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/* padding: 1 */
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/* last cacheline: 1 bytes */
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};
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/* size: 1, cachelines: 0, members: 0 */
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/* padding: 1 */
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/* last cacheline: 1 bytes */
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};
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<SNIP>
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$
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Reported-by: William Cohen <wcohen@redhat.com>
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Fixes: 13e5b9fc00ee ("fprintf: Add unnamed bitfield padding at the end to rebuild original type")
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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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---
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dwarves_fprintf.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/dwarves_fprintf.c b/dwarves_fprintf.c
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index 8ad1ced7840c..706f1b5033f5 100644
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--- a/dwarves_fprintf.c
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+++ b/dwarves_fprintf.c
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@@ -1620,7 +1620,7 @@ static size_t __class__fprintf(struct class *class, const struct cu *cu,
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* to avoid adding the forced bitfield paddings and have btfdiff happy.
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*/
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if (class->padding != 0 && type->alignment == 0 && cconf.has_alignment_info &&
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- !cconf.suppress_force_paddings) {
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+ !cconf.suppress_force_paddings && last != NULL) {
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tag_pos = cu__type(cu, last->tag.type);
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size = tag__size(tag_pos, cu);
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--
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2.20.1
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24
dwarves.spec
24
dwarves.spec
@ -2,7 +2,7 @@
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%define libver 1
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Name: dwarves
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Version: 1.30
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Version: 1.31
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Release: 1%{?dist}
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License: GPLv2
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Summary: Debugging Information Manipulation Tools (pahole & friends)
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@ -80,9 +80,7 @@ rm -Rf %{buildroot}
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%files
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%doc README.ctracer
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%doc README.btf
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%doc changes-v1.28
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%doc changes-v1.29
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%doc changes-v1.30
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%doc changes-v1.31
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%doc NEWS
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%{_bindir}/btfdiff
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%{_bindir}/codiff
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@ -134,6 +132,24 @@ rm -Rf %{buildroot}
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%{_libdir}/%{libname}_reorganize.so
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%changelog
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* Mon Dec 1 2025 Gregory Bell <grbell@redhat.com> - 1.31-1
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- Rework the selection of functions to represent in BTF, for instance:
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- Skip functions that passes values thru the stack when those structs don't
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have expected alignment due to some attribute usage that then causes
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problems with BTF trampolines due to lack of expressiveness in BTF to
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signal such special cases.
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- Skip objects (compile units) without DWARF: don't stop a multi object
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encoding session just because one doesn't have any DWARF in it.
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- Fix BTF dedup by updating libbpf.
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- Fix the inference of the explicit alignment attribute of zero length arrays,
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like struct skb_ext->data[] in the Linux kernel. Important as BTF has no no
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explicit alignment attribute encoding.
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- Fix the inference of alignments after bitfields, such as in struct
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nft_rule_dp->data[] after ->handle:42, also in the Linux kernel.
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- Fix segfault with --show_reorg_steps option, e.g. pahole -R -S -C task_struct.
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- Add comparision of functions encoded in BTF between baseline 'master' branch
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and current branch, i.e. 'next'.
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* Fri Jun 20 2025 Gregory Bell <grbell@redhat.com> - 1.30-1
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- New release: 1.30
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- Better detection of abort during DWARF loader thread processing
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2
sources
2
sources
@ -1 +1 @@
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SHA512 (dwarves-1.30.tar.xz) = 222ad1f8e7bd4e079b4bf9059eaadebc23a0f4a95a77374b1162a1704acdceb794743e61bc14ec1cbda9a7c686f6972c243e784aeedf39cc15b6a8c6a4f1e2eb
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SHA512 (dwarves-1.31.tar.xz) = 0761159c6e0400b32761c7497a2dde2f0ba1992a381480c2a20c33e3aceafeb3a1a7d58ecc3a8ae236a2dc5b4eca0ed38b5fc9b13a83cfc1e6b980ccf835214e
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